APPENDICES
Appendix 2 Special Register List
App
- 72
9
Device Explanation
10
CPU Module Processing
Time
11
Procedure for Writing
Program to CPU Module
Appendices
Index
(13)I/O module verification
(14)Process control instructions
TableApp.31 Special register
Number Name Meaning Explanation
Set by
(When set)
Corres-
ponding
ACPU
D9
Corresponding CPU
SD1400
I/O module
verification error
Bit pattern, in units
of 16 points,
indicating the
modules with
verification errors.
0 : No I/O
verification
errors
1 : I/O verification
error present
• When the I/O modules whose I/O module information differs from that
registered at power on are detected, the numbers of those I/O modules
are entered in bit pattern.
(If the I/O numbers are set by parameter, the parameter-set numbers
are stored.)
• Also detects I/O module information.
• Not cleared even if the blown fuse is replaced with a new one.
This flag is cleared by error resetting operation.
S (Error)
D9116
QnA
Qn(H)
QnPH
QnPRH
Rem
SD1401 D9117
SD1402 D9118
SD1403 D9119
SD1404 D9120
SD1405 D9121
SD1406 D9122
SD1407 D9123
SD1408 New
SD1409
to
SD1430
New to
New
SD1431 New
TableApp.32 Special register
Number Name Meaning Explanation
Set by
(When set)
Corres-
ponding
ACPU
D9
Corresponding CPU
SD1500
SD1501
Basic period Basic period tome
• Set the basic period (1 second units) use for the process control
instruction using floating point data.
UNew
Q4AR
QnPH
SD1502
Process control
instruction detail
error code
Process control
instruction detail
error code
• Shows the detailed error contents for the error that occurred in the
process control instruction.
S (Error
occurrence)
New
SD1503
Process control
instruction
generated error
location
Process control
instruction
generated error
location
• Shows the error process block that occurred in the process control
instruction.
S (Error
occurrence)
New
SD1506
SD1507
Dummy device Dummy device • Used to specify dummy devices by a process control instruction. U New
QnPH
QnPRH
b15
b14
b13
b12 b11
b10 b9 b8 b7 b6 b5
b4
b3
b2 b1
b0
000 000 0000000SD1400
00 0 00000000SD1401 00
0 0 0000 000
SD1431
0000
Indicates an I/O module verification error
00
00
00
1
X Y
0
1
X Y
190
1
X Y
1FE0
SD1501 SD1500Floating points data =
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